package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.enity.Dish;
import com.itheima.reggie.enity.DishFlavor;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

@Transactional
@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {
    @Autowired
    private DishFlavorService dishFlavorService;

    /**
     * 保存菜品并保存对应的口味数据
     *
     * @param dishDto
     */

    public void saveWithFlavor(DishDto dishDto) {
        //保存菜品的基本数据到菜品表dish
        this.save(dishDto);
        Long dishId = dishDto.getId();
        //菜品口味
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map((item) -> {
            item.setDishId(dishId);
            return item;
        }).collect(Collectors.toList());
        //保存菜品数据到口味表dish_flavor
        dishFlavorService.saveBatch(flavors);
    }


    /**
     * 根据id来查询菜品信息和对应的口味信息
     *
     * @param id
     * @return
     */
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本的信息，从dish表查询
        Dish dish = this.getById(id);

        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish, dishDto);

        //查询当前菜品对应的口味信息，从dish_flavor表查询
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId, dish.getId());
        List<DishFlavor> flavors = dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(flavors);

        return dishDto;
    }

    /**
     * //更改菜品信息 同时修改口味对应信息
     *
     * @param dishDto
     */
    @Override
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish中的基本信息
        this.updateById(dishDto);

        //清理当前菜品口味对应数据 dish_flavor表中的interest操作   页面看似没删除实则是服务器处理
        LambdaQueryWrapper<DishFlavor> lqw = new LambdaQueryWrapper<>();
        lqw.eq(DishFlavor::getId, dishDto.getId());
        dishFlavorService.remove(lqw);
        //添加提交过来的口味信息数据
        List<DishFlavor> flavors = new ArrayList<>();
        flavors = flavors.stream().map((item->{
            item.setDishId(dishDto.getId());
            return item;
        })).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);

    }
}
